Are Heat done building roster?

ASK IRA:

MIAMI — Q: Ira, why didn't the Heat go after Kenyon Martin? He can be a huge help. And why is it that it seems no one is after him? -- M.J., Rome.

A: Because NBA rosters remain fluid, especially with teams carrying non-guaranteed contracts to start the season. For his part, Martin is looking for a team with money that might run into the need for a player with his skill set, possibly due to an injury. For the Heat's part, there is a reason players at the end of the roster don't have guarantees, so other options can be explored as the season progresses, as has happened rather frequently around here when considering Erick Dampier, Mike Bibby and Ronny Turiaf in recent years.

Q: It's a good thing we know who the Heat players are, because with six new uniforms, I guess you could say you couldn't tell the uniforms without the players? -- Jack, Deerfield Beach.

A: And that's the beauty of it all, that whether in red, white, black or throwback, LeBron James still is LeBron James. As long as he isn't in Lakers colors, it's all good.

A: Of course not. This is a rivalry now, just like it had been with the Knicks. No matter who the Heat or Celtics are playing, there will be plenty of rhetoric between the two right through what seems like another inevitable playoff matchup.